关键词: 设施土壤, 充分湿润, 淹水, 土壤盐分

Abstract: In order to understand better the effect of different paddy-upland rotations on facility soil salinity, water logging with water cress and wettish with water dropwort planted in 2 facilities next to each otherwere conducted．Sampled 4 layers of soil with 10 cm as a unit, we tested and analyzed the soil EC value and anion and cation contents in soil layers．The result shows that wettish cultivation can obviously reduce the total salinity in 0-30 cm soil layers, and the decline degree was higher than that of water logging．While the soil salinity content in 30-40 cm layers was increased and stranded．After wettish cultivation treatment, the ions that vegetable absorbed little will infiltrate significantly，while NO₃^- as nutrient ion in main absorption layer of root system increases．The decline degree of K⁺ in 0-30 cm layers treated by wettish cultivation was
obviously smaller than that treated by water logging cultivation．All these indicates that wettish cultivation has better reserve effect on nutrient ions absorbtion by vegetable crops．

Key words: Facility soil, Full wettish, Water logging, Soil salinity